Friday, April 10, 2009
Kissing
Why kissing makes you feel good
London, February 9
A PASSIONATE Lip-lock unleashes a chain of chemical changes that really turn your head, says a new study.
As Valentine's Day approaches. Wendy Hill, professor of psychology at Lafayette College, Pennsylvania, has shed light on that most basic of all human expressions of love – the kiss.
In her study, Hill found that a meeting of lips can spark a complex chemical surge into the brain that makes a lover feel excited, happy or relaxed.
Also, it is being speculated that the hormone release may be triggered directly by an exchange of sexually stimulating pheromones in the saliva.
"This study shows kissing is much more complex, and causes hormonal changes and things we never thought occurred," The Times quoted her as saying. "We tend to think more about who we are kissing and how it feels, yet there are a lot of other things happening," she added.
To reach the conclusion, her team looked at the impact of kissing on levels of two hormones, oxytocin and cortisol, in 15 male-female couples before and after holding hands and before and after kissing.
Oxytocin is known to be involved in social bonding so the team predicted its levels would rise, while cortisol, a stress hormone, would fall. Cortisol levels fell in both sexes, although oxytocin levels rose in men but fell in women.
Saturday, January 24, 2009
Lust for Life
TOI, Patna 16.01.09
Lust For Life
Researchers from the University of Sheffield recently discovered that getting a second wife is a sure shot way to a longer life. Keeping socio-economic differences in mind, it has been observed that men over 60 from 140 countries who practice polygamy live, on average, 12 percent longer than men hailing from monogamous nations. Fathering more kids with more wives leads to increased male longevity. So to live long, do men need to turn into baby-boomers? A look into humanity’s past and present might suggest that more cultures have practiced consensual non-monogamy than monogamy. The Bible did not condemn polygamy. Old Testament and Rabbinic writings frequently attest to the legality of polygamy. There is Quaranic sanction for polygamy. Polygamy and polyandry were prevalent in ancient India; many Hindu gods and kings are also depicted as polygamous, with two or more wives. The received notion is that polygamy comes most naturally to men. Where polygamy is allowed, it is almost always polygyny (one man with many wives) and almost never polyandry (one woman with many husbands). But interestingly, Tim Birkhead, an expert in behavioural ecology, writes in his book ‘Promiscuity’ that in the majority of species across the animal kingdom, the general pattern is for females to copulate with more than one male. Then why must Homo sapiens be left behind?
Sexual infidelity is one of humanity’s great obsessions, perhaps second only to violence. Perhaps for humans, monogamy does not come naturally, and biology ‘predisposes’ us to seek multiple sex partners. Zoologist David Barash and psychiatrist Judith Eve Lipton argue that virtually all animals are far from being 100 per cent monogamous 100 percent of the time. Then, are we all programmed to live long? Living long is fine but the only rub is that broken marriages are fast becoming more a norm than an aberration and there are many men who would rather court the life of a monk than tie the knot again. For them, the idea of taking a second wife is re-invocation to the hellfire they’ve escaped. Perhaps the study should have taken note of the mortality records of people who increasingly beat around the bush of a monogamous marriage and run into extramarital affairs.